in an interfaith service here in boston.presidentobamawillbe in attendance along with many others including mitt romney, former governor of massachusetts. cnn will bring you that service live. >> here in boston, many of the people who came here just for the marathon have not left. there is a sense of connection here now to what's going on. some of it is waiting to see what happens, if there's a discovery. but it's now just feeling the sense of moving on and being here together. susan candiotti has seen the pictures of the two men. she joins us now. susan, what do these images show to your eye? >> well, very interesting because, of course, they're standing in a huge crowd of people. and you've got two men who are standing there as described to us also by investigators, the reason they're interested is because it's near the finish line around where all those flags are that you've been seeing time and again right near the finish line. and what's pieeking the interes among other things is that they're carrying bags with them. one of them is a dark colored backpack and another one appears to be

for wounded souls. ♪presidentobamahonoredthe victims of the boston bombings with emotional remarks. >> for millions of us, what happened on monday is personal. it's personal. that's what the people of boston are made of. your resolve is the greatest rebuke to whoever committed this heinous act. they sought to intimidate us, to terrorize us, to shake us from those values that make us who we are as americans, well, it should be pretty clear by now that they picked the wrong city to do it. [ applause ] not here in boston. not here in boston. yes, we will find you, and, yes, you will face justice. like bill iffrig, 78 years old. the runner in the orange tank top who we all saw get knocked down by the blast. we may be momentarily knocked off our feet, but we'll pick ourselves up. we'll keep going. we will finish the race. >> the president honored bombing victim krystle campbell, who was killed just weeks before her 30th birthday. he honored lu lingzi, recently moved to boston for graduate school to study math and statistics. she went with two new friends to see the boston marathon and w

are being transported to six area hospitals and just after 6:00 p.m.,presidentobamaaddressesthe country vowing to find those responsible. >> make no mistake, we will get to the bottom of this. any responsible individuals, any responsible groups will feel the full weight of justice. >> no matter how many times you see it it is still just as terrifying. i do want to show one photograph, as well, speaking to what was not the hundreds and hundreds of bags waiting for runners who were never able to claim them again, a snapshot of innocence and perfection on that patriots' day suspended if not lost. george. >> josh, the runners across the finish line right before the moment of impact, bill iffrig is right here, 78-year-old bill i have africa, rebecca roche and we have seen that image. i want to put it up on the screen as you were just approaching the finish line, the blast hit and you went down right there. tell us what you remember. >> yeah, i didn't know what had happened. all of a sudden this enormous blast right next to me and it just kind of buckled my legs and i knew i was going down so

area hospitals and just after 6:00 p.m.,presidentobamaaddressesthe country. >> make no mistake, we will get to the bottom of this. >> investigators searching for clues as to who is behind the bombings all night long and abc's chief investigative correspondent brian ross is here and he's been reporting on it all night. brian? >> reporter: well, good morning, george. there is a killer at large. and with no one in custody, and no sense that there might be more terror attacks coming, the search for the people behind this is -- could not be more urgent. overnight a tip about possible explosives led federal agents to search an apartment on the fifth floor of this building in the boston suburb of revere. agents later told residents there was nothing to worry about. but the quick law enforcement response underscored the urgency of the fbi's effort to track and stop the people responsible for monday's attack. >> the maker of the device intended for the device to go off simultaneously, and he had absolutely no regard for, you know, women, children, runners, innocent people. [ sirens ] >> rep